Improvement in link-motions



D. S. STOMBS. Link-Motion.

No. 217,650. Patented July 15, I879.

WITNESSES INVENTOR:

I @JJ ATTORNEYS.

N.PETRS, FKOTO-UTROGRAFHER, WASHINGTON D c UNITED STATES PATENT QFFICE.

DANIEL S. STOMBS, OF STILLWATER, MINNESOTA.

IMPROVEMENT IN LINK-MOTIONS.

Specification forming part of Letters Patent N0. 217,650, dated July 15,1879; application filed March 18, 1879.

valves may be readily regulated to cut off steam at any desired point ofthe stroke.

The invention consists in the combination of the lever and the pivotedconnecting-rod with the lever, the crank-arm, the connectingbar, and theslide provided with the pivot and with the link, the valve-stein, andthe eccentric-rod, to adapt the adjustment of the link to be regulatedfrom the governor of the engine, as hereinafter fully described.

Arepresents the steamcylinder of an engine, B, the piston-rod; G, thecross-head; D, the connecting-rod; E, the crank, and F thedriving-shaft, to which is attached the eccentric G, that operates thevalve. H is the valvechest, I is the valve, and J is the valve-stem.About the construction of all these parts there is nothing new.

The outer end of the valve-stem J is forked to receive the link K, towhich it is pivoted by a bolt, L, passing through the said forked endand through the slot of the link K.

To the lower end of the link K is pivoted the forked end of theconnecting-rod M, the other end of which is connected with the eccentricG by an eccentric-strap, N, in the usual way.

The link K is pivoted at its middle part to a pivot, 0, attached to ablock, P, which slides up and down upon a stationary standard, Q,attached to the bed of the engine, so that the motion may be reversed bysliding the block P up and down upon the standard Q, and by adjustingthe said sliding block P upon the said standard Q the valve 1 may beadjusted to cut off steam at any desired point of the stroke.

To the pivot O of the sliding blockP is pivoted the lower end of aconnecting-bar, R, the upper end of which is pivoted to the lower end ofthe crank-arm S. The upper end of the crank-arm S is pivoted to theupper end of the standard Q, and to the other end of its pivot isattached the end of the lever T, so that the slide P may be adjusted, asmay be required, by adjusting the said lever T.

The lever T moves along an arched bar, U, supported from the standard Q,and which may be provided with a scale of divisionmarks to serve as aguide in adjusting it. The lever T may also be provided with a catch tohold it in any position into which it may be adjusted.

To the lever T is attached a short stud, V, to the outer end of which ispivoted the end of a connecting-bar, W. The other end of theconnecting-bar W is pivoted to the end of a lever, X, which is pivotedto a standard, Y, attached to the cylinder A, or to some other suitablesupport.

The free end of the lever X is designed to be connected with thevertical rod of any ordinary governor. By this arrangement the valve Iwill be adjusted to cut off steam quicker or slower by the movement ofthe engine, the admission of steam being thus regulated by the speed ofthe engine.

The automatic device may be used or not, as may be desired.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent The combination of the lever X and the pivotedconnecting-rod W with the lever T, the crank-arm S, the connecting-barR, and the slide P, provided with the pivot O and with the link K, thevalve-stem J, and the eccentric-rod M, to adapt the adjustment of thelink to be regulated from the governor of the engine, substantially asherein shown and described.

WM. M. MOOLUER, I O. M. MOOLUER.

